Device for grinding water meters



INVENTOR @tto Zachow L EL Filed Feb.

,Ak IHIIIIII O ZACHOW DEVICE FOR GEINDING WATER METERS May l, l1923.

VV ITN ES S ES ATTORNEY Patented May 1, 1923.

UNITED rss o'r'ro zAcHow, or CLINTONVILLE, WISCONSIN. DEVICE FonGRINDING WATER- METEBS. "i

Application filed February 28, `1922. Serial No. 540,069.

This invention relates to grinding devices,

and especially'for grinding the oscillatory disc pistons of watermeters.

The object is to provideta device of this I character which ymay bereadily applied to the upper vportion of the measuring chamber of anordinary water meter, in which they disc form of piston is employed, thedevice having means for engagement with the drill chuck of an ordinarydrill 'press which may be employed for imparting rotary motion to anattachment which, in turn, causes the disc piston to rotate and to rockin the same manner as when driven by the pressure of d the water in itsnormal operation as a meter,

the said measuring chamber and piston being adapted to vbe immersed in apan or other receptacle containing a grinding fluid while beingsupported on th'e bed pla-te of the drill press, suitable clamps, bracesor holding meansbeing employed for holding the non-revolving shell orbearing .portion of the grinder from turning while the operation is inprogress;v

A full and complete understanding of the invention may be obtained froma consideration of the following detailed description, taken inconnection' with the accompanying drawing forming a part of thisspecification, it being understood that while the drawing shows apractical form of the invention,the latter is not confined to strictconformity therewith, butmay be changed or modi'ed so long assuchchanges or modifications mark no material departure from the salientfeatures of the invention as specifically pointed out in the appendedclaims.

In the drawing, in which similary reference characters designatecorresponding parts throughout the several iigures, l

Figure 1 is a vertical sectionalview of the improved grinder applied tovthe piston chamber of an ordinary disc piston water meter; y f

Figure 2 is an inverted'plan view of the grinding device, a simple formof holding clamp being shown in connection therewith;

iastate PATENT- forties,

Figure 3 is an elevation of'an interiorly threaded sleeve used in thedevice;

Figure 4 is a similar `view of the driving spindle thereof;

Figure 5 is a horizontal section on the line 5-5 of Figure-1; v

Figure 6 isa similar section on the lin'e 6 6 of Figure 1.

In water meters most generally fused, an

outer casing comprising `upper and lower sections is employed 1n whichare housed, 1n the said lower section, an interior'casing `confining arotary and oscillating disc piston, .which has suitable connection withregistering'mech'anism housed inthe upper section of the outer casing,and so arranged, by means of gearing, as to indicate at any time thequantity of water which has passed through themeter. The lower sectionof the outer casing has suitable nipples forl connection to a pipe linein order to allow the water to enter at one side and to pass out at theother, and the interior casing locatedfin the lower-section is alsoprovided with inlet and outlet passages so that the disc pistonl may beactuated thereby, the said piston being preventedy from revolving'aboutits own axis by suitable, vertically disposed walls,

well known manner, and lto cause an upwardly directed pin to impart"rotary motion to a vertical shaft included in` aftrain of ears.

g In the continued use of the meter the'l interior casing, havingv thedisc piston located therein, is subjected to the passage quantities ofwater andfrequently becomes clogged with accumulations of` sediment,

which iirst impedes the operation of the pis# ton and gearingto anextent that'accurate with new members.-

the accumulations, that the but free to rock about a central point in a",85

of great 1 The abovel briefly described parts of an ordinary waterymeterform no part of the present invention, which lis concerned withmeans for grinding and renewing the'piston, by removing allaccumulations yin the` piston casing. Y It has not been deemednecessary,- in the drawing, to y illustrate the construction of thewater meter in detail, northeI ,operation of the same, only the pistonlvcasing for r wn,

the; same being shown. The casing, constituting a measuring chamber,comprises a lower section l and an upper section 2, suitably tted andheld together, and so shaped -asto permit of therncking movement of a,thus held from axial rotation while allowed toroclnthe said. ballhaving an axially disposed pin'7; eiitending upwardly through the .upperball bearing. The casing is yprovided 'with a water inlet on one sideandal water outlet, on theother side, neither of which are shown, while theupperportion of the pis ,ton casing 1s :provided with an upstandingannular flange 8v provided with threads in its inner4 wall.

The invention comprises a tubular sleeve Lor casing, 9,having oneendreduced to-provide an extension y1() which is exteriorly threaded andof a diameter to be screwed intorthe said flange 8V of the pistoncasing,

the shoulder .thus yformed restingupon the upper edge ofthe flange. Thecasing 9, at the ,threadedenrh is providedwith a counterbore 11entendingone-third the length of the saine, and abore 12 ofV reducedwidth which extends ythe remaining portion of the casing. A shoulderl-13,is provided-at the 'juncf tion of the two bores. Extending from thisshoulder to a point near the other or upper r end of the sleeve isalongitudinally disposed groove 1.4L, constituting an oil groove, and attheV upper end of the same the casing is provided withv a transverseborell which is suitably. threadeduior the reception of a screw. 16vforja purpose .to be explained.

Adapted to the bore 12 through the casing 9, is an inner sleeve 17 of a`diameter f te yfreely, slide therein, said sleeve having at its lowerendan outstangling flange V18,

adapted to abut against theinterior shoul-y der 13 otthe casing and toform a thrust bearing for the inner sleeve, andprevent its u pwardmovement. In line with the screw 16, the innerY sleeve 17 isA providedwith a peripheral groove19 which isadapted to receive the 'inner end ofthe saidA screw at ,any to prevent any downward .movement of the sleevewithin the casing y when the' device isl being applied for operalatence21, circular in tormand adapted to snugly iit the counterbore '11 of thecasing 9, and provided at one side with an undercut 1nclined slot H22,v.into vwhich is adapted to loosely fit the upstandiirg` pin 7 ot thepiston disc 3.. ritthefupper end the spindle 20vis provided with areduced 'portionl having one side flattened and adapted to enter thechuck 211- ot an rordinary drill press, or any other suitable part of amachine having means tor turning` the device, the said chuck havingI theusual eet screw 25 for maintaining the connection. The threaded portionot the spindle 20 extends somewhat above the upper end of the casing 9and receives a clamping nut 2,6 applied thereto, .with a washer 27interposed be tween the same and the upper-,end ot the casing, saidwasher being oi" a diameter to extend over and bear upon the said upperend and to form a thrust bearing in, opposition to the aforesaid flange18.

In operation. the piston casing 1 is removed trom the water meter andplaced within a pan, indicated in dotted 4lines at 28 in Figure 1v ofthe drawing', while saidA pan is supported on the bed plate oi the drillpress directly beneathvthe chuclrv 24;. Any suitable means, such asclampingmember 29 which may be formed of wood and held in clampingrelation by a bolt 30 may/f be employed to hold the casing from turningand the pan is filled with any suitable grinding` fluid, such as emeryand oil, to a level above the casing members 1 and2, so that theinterior, ofthe casingfmay be flooded with the same and subjected to thegrinding action thereohwhen the rotation ot the drill press is startedafter the parts are properly connected.l

In applying` the grinderto the piston cas ing, the screw 16 is tightenedagainst the im ner sleeve 17 to prevent `the latter trom turning in thecasing 9, when, by unscrewing the nut 26 suiiiciently,.the spindle 29may be screwed throughy the sleeve `1,7 to bring; the head 21 near to orprojecting below the lower end ofthe extension 10` ot the casing. Theinclined pin 7 ort the'pist0n may then be introduced into theundercutslot 22 of said head, and theextension threaded into the upstanding ange8 ot the piston casing. After the. casing 9 kis seated, the spindle 20`may be screwed upwardly throughthe inner sleeve 17,.,which is held fromrotation within the .caxsing9 by ineans -ot the screwy 1G, until allbinding action of the pin7 within the slot 22 is: relieved, when theclampnut 2,6 is Y.tightened down against the washer 27, which; binds thespindle 2Owithin the inner. sleeve 17 and the screw `16 is thenreleased, whenthe movable partsarefree to rotateqwithin the casing 9tolproceed with the grinding. operation.

meters of the disc piston type, and operatenLd to grind the same whileunder the action of proper grinding fluids to remove all accumulationstherefrom and permit of further continued and effective `use of themeter. i

What is claimed is 1. A grinding attachment for water nieters comprisinga body member, means at one end of said member for detathable connectionwith the piston casing ofthe meter, an inner sleeve slidably fittedinthe body member, means for holding` said sleeve from longitudinalmovement, a spindle traversing ing the said sleeve andadjustablerlongitudinally therein, means for causingL he spindle andsleeve to revolve together, and means formed on the lower end of thespindle to oscillate the meter piston when said spindle' rotates.

2. A grinding attachment for lwater meters comprising a Vbody member,`means at one end of said member for detadhable connection with thepiston casing ofthe meter, an inner sleeve slidably fitted ,in the bodymember, means for holding said sleeve from longitudinal movement, aspindlegtraversing the said sleeve and adjustable therein, means forcausing the spindle and sleeve to revolve together. and a head formed onthe lower end of the spindle and provided. with` a: slot to receive theupstanding inclined pin of the meter piston said spindle being`projected from the body member and having means for connection toa'source of' power.` g

A grinding attachment for water me. ters comprising a body .memberhaving a ,threaded extension at one end for connection with the pistoncasing of the meter, a spindle operatively mounted within the bodymember for rotary and longitudinal movements., said spindle'providedfwith a head at its inner end formed with a slot to receive theupstanding pin of the meter piston, and said spindle being extendedbeyond the body member and provided with means for connection to asource of power for rotating. the same. f

1. A grinding attachment for water meters comprising abody memberthreaded at one end for connection with the piston casing of the meter,said body member having a main bore and a counterbore at one end of themain bore, aninner internally threadn ed sleeve slidably fittedwithin-the bore `of f thebody member, means for holding the saidl sleevefrom "longitudinal movement,

the threads of the said sleeve and adjustable therein, and a head formedon` one end `of the spindle to fit the counterbore of the body member,said head being provided wit a slot to receive the upstandin f motiontheretometer piston to ii i e Y whennib Y- -r ein@ is fev'oivd, SaidSpinne, eingprojected beyond the body member and.

aj threaded spindletraversing and engaging` 'y provided with means forconnection with a rotatable mechanism. y y ,v j

5. A grinding attachment for Waterv vmeters,lcomprising a bod-ymemberhaving a threaded extension at one end for connection with the pistoncasing of the meten means engaging with the bodyin'emb'erj lfor 7holdingthe same from movement, aninter-v nally threaded sleeve slidably.fitted Within the body member and providedwvvith means for holding saidsleeve from longitudinal movement, a threaded spindlev traversing saidsleeve vand adjustable thereinkto have 9 0,

both rotaryy and longitudinalv movements,

and means at the inner end of the spindlel for detachable connectionwith the piston cas@ y ing of the meter, said spindle projecting.

from the body member and having means for connectionwithfasource vofpowerto rotatel the same. 1

6. A grindingl attachment for water mel ters comprising tubular Vbodymember having a threadedextension at one end for connection to theflange ofthe disc piston;

casing of the meterQsaid body member hav-v ing its borevreduced at theend oppositethe threaded extensiony to provide a shoulder, an inner,internally` threaded sleeve slidably fitted in the body member andhaving a dang@ at one end abutting theysaid shoulder and provided with:a circumferential groove i near its opposite end. a screw set throughthe wall of the body and. entering the said groove tohold the innersleeve from longif tudinal movement, threaded spindle trav ersing theinnersleeve and adjustable therei i in, a headformed on the lower end ofthe spindle` of a diameter to fit the larger, lower end of the bore linthe body, and provided with an under cutrslot to receive the upstanding,inclined pin of' the meter'piston .to j

impart rotary motion'thereto when the spindle is revolveda binding nutand an interu nosed Washer mounted on the spindle to bind on the upper'end of the body, in opposition tothe internaly flange and' shoulder,saidspindle having means for connectiony with a drill chuck. y j

ln testimony, `that I7 claim the foregoing as my own, Ihavehereto iture.

affixed my signa` orfro zAcHoW.,

